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Note 15. Postemployment Benefits (Tables)
 6 Months Ended
Dec. 31, 2019
Postemployment Benefits [Abstract]  
Schedule of Changes in Projected Benefit Obligations
The components of net periodic postemployment benefit cost applicable to our severance plans were as follows:
 
Three Months Ended
 
Six Months Ended
 
December 31
 
December 31
(Amounts in Thousands)
2019
 
2018
 
2019
 
2018
Service cost
$
119

 
$
126

 
$
245

 
$
253

Interest cost
18

 
24

 
37

 
47

Amortization of actuarial income
(90
)
 
(103
)
 
(178
)
 
(202
)
Net periodic benefit cost
$
47

 
$
47

 
$
104

 
$
98